J/other/PASA/29.ivo://CDS.VizieR/J/other/PASA/29.72doi:10.26093/cds/vizier/ds/cjkhcCDSFitzgerald M.Criss J.Lukaszewicz T.Frew D.J.Catelan M.,Woodward S.Danaia L.McKinnon D.H.2026-03-17T20:08:19Z2012-05-22T14:47:42ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frglobular-star-clustersvariable-starsphotometryV- and I-band observations were taken over 9 months to study the RR Lyrae population in the metal-poor diffuse globular cluster NGC 6101. We identify one new variable, which is either a potential long-period red giant variable or eclipsing binary, and recover all previously identified RR Lyraes. One previously studied RR Lyrae is reclassified as an RRc type, while two period estimations have been significantly refined. We confirm that NGC 6101 is Oosterhoff type II with a high ratio of n(c)/n(ab+c)=0.833 with a very long mean RRab period of 0.86d. By using theoretical RR Lyrae period-luminosity-metallicity relations, we use our V- and I-band RR Lyrae data to gain an independent estimate of the reddening towards this cluster of E(B-V)=0.15+/-.04 and derive a distance of 12.8+/-0.8kpc. The majority of the work in this study was undertaken by upper secondary school students involved in the Space to Grow astronomy education project in Australia.2012PASA...29...72Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/PASA/29.72CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/PASA/29.72https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/PASA/29.72http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/PASA/29.72https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/PASA/29.72https://vizier.iucaa.in/viz-bin/votable?-source=J/other/PASA/29.72http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/PASA/29.72GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/PASA/29.72/table1 (RR Lyrae properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/PASA/29.72/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/other/PASA/29.72/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/PASA/29.72/table1?GETtext/xml+votable180.050000true246.51125-72.1873060.0055555555555555566/412573.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/PASA/29.72?format=asciiOpticaldefaultJ/other/PASA/29.72/table1RR Lyrae propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar name (<Cl* NGC 6101 SAW VNN> in Simbad)meta.id;meta.mainchar<Vmag>Average V magnitude ((Vmin+Vmax)/2)magphot.mag;em.opt.Vfloat<V-I>Average V-I index (<Vmag>-<Imag>)magphot.color;em.opt.V;em.opt.IfloatTypeRR Lyrae typemeta.notecharAVAbsorption in V bandmagphot.mag;em.opt.VfloatRAJ2000Right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)pos.eq.dec;meta.mainLClight curvesmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.refcharPerPerioddtime.periodfloatJ/other/PASA/29.72/lcVI light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar name (<Cl* NGC 6101 SAW VNN> in Simbad)meta.id;meta.maincharBand[VI] Observed bandinstr.bandpasscharJDJulian datedtime.epochdoublemagObserved magnitude in Bandmagphot.magfloate_magrms uncertainty on magmagstat.error;phot.magfloat